When I play my keyboard on stage I sometimes can't hear myself!

Question

At some gigs, if there aren't any monitors, I can't hear myself- because I have a keyboard with only a headphone jack output.

What should I do to hear myself?

Answer 1

May be all you need is a headphone splitter, but i guess for most keyboard, at the back it should have 1 right and 1 left for speaker output, headphone socket for the sound output should be alway free.